Physics, 15.04.2020 04:18 ekvitin337
A bar 2.0 ft. long is pivoted at its center. A 4.0-lb weight is hung from one end and a 1 -0-1 b weight from the other end. At what distance from pivot (fulcrum) must a 25-lb weight be placed to balance the bar? Make a drawing that illustrates this torque problem. A fishing pole 6.0 ft. long weighs 3.0 lbs and has its center of gravity 2.0 ft. from the handle end. When a fish is at the other end of the pole, it can be balanced at a point 6.0 in. from the fish. How much docs the fish weigh?
Answers: 3
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22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.
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Physics, 23.06.2019 03:30
Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.
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Physics, 23.06.2019 14:00
Scientists and engineers design new technologies to solve problems. often, a new technological design will contain a flaw. which of the following is true about such a flaw? a. it should be studied so that the design can be fixed or a new design can be proposed. b. it means that the problem being investigated cannot be solved. c. it means that the people who proposed the design should not be scientists or engineers. d. it makes the technological design useless.
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Physics, 23.06.2019 16:00
Which tools do meteorologists use to create weather forecasts? check all that apply. a)guesses b)computer models c)weather service maps d)data from instruments e)personal observations
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A bar 2.0 ft. long is pivoted at its center. A 4.0-lb weight is hung from one end and a 1 -0-1 b wei...
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